Home / 689,128.80-951,018.36-417,246.48

Finding the Fourth Proportional to 689,128.80, 951,018.36 and 417,246.48

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Solution

The fourth proportional to 689,128.80, 951,018.36 and 417,246.48 is: 575,812.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,128.80 : 951,018.36 = 417,246.48 : x
  2. Step 2: Convert to fraction form
    689,128.80/951,018.36 = 417,246.48/x
  3. Step 3: Cross multiply
    689,128.80x = 951,018.36 × 417,246.48
  4. Step 4: Simplify right side
    689,128.80x = 396,809,063,125.37
  5. Step 5: Solve for x
    x = 396,809,063,125.37/689,128.80
  6. Step 6: Final answer
    x = 575,812.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.